During his time with the team, the 66-year-old designed machinery which won six constructors' championships and seven drivers' titles, making him one of the most successful designers the sport has ever seen.
Newey however will also have to adjust to a new environment with Lawrence Stroll's F1 team, with many among the paddock doubting how much impact the design legend can truly have on the team alone.
Speaking to Casino Uden Rofus, former McLaren mechanic Marc Priestley also shared this view.
"Adrian Newey is a fantastic engineer and has a brilliant mind, but one individual does not guarantee success when developing a new F1 car.
“I'm not saying that Aston Martin don't have a great team, but we've seen evidence that they have been pretty unsuccessful in designing a good car and then developing that car throughout the season.
"Newey is joining a team with very limited success, but Aston Martin have just attained new state-of-the-art factories and the team is growing rapidly."